Question

if y=(x+1)(x-1) then dy/dx at x=1 is ???

Answer 1

Explanation:

y=x(x-1)+1(x-1)

y=x²-x+x-1=0

y=x²-1

by integrating

y=2x

y=2(1)-2(0)

y=2

Answer 2

y=(1+1)(1-1)

d.w.r.t.x

dy/DX=0

hope it helps

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